The Secrets of Electric Cars and Their Motors: It’s Not All About the Battery, Folks

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Lighter materials in motor construction, new alternative solutions for rare-earth magnets, and optimized overall performance characteristics for different vehicle demands are all very much in the crosshairs of automotive engineers. And that’s just the start, says Venkat Viswanathan, a mechanical engineering professor at Carnegie Mellon University who studies EV performance. “The motor efficiency map—that is, its efficiency as a function of torque and speed—determines the energy consumption for consumer vehicles, and the peak power characteristics are an important factor for high-performance demands,” Viswanathan said. “In addition, the heating of the motors in-use—at high speeds—is another area with room for innovation and development.”More>>